Crystal

Cluster / group of crystals
Cluster of natural uncut rhinestone.
Location: Minas Gerais, Brazil.

Rock crystal is the crystalline variant of quartz. Typical for all rock crystals is that they have six sides and a point. The application is known in quartz watches using the piezoelectric property of quartz. A thin plate of quartz is energized by the battery, causing it to vibrate. This vibration is so constant that it can be used as a clock.

Cut irregular shape
Hand-carved and beautifully polished rock crystal from Madagascar.

Rock crystal is the crystalline variant of quartz. Typical for all rock crystals is that they have six sides and a point. The application is known in quartz watches using the piezoelectric property of quartz. A thin plate of quartz is energized by the battery, causing it to vibrate. This vibration is so constant that
it can be used as a clock.

Bulbs
Rock crystal ball.
Origin of the mountain: Minas Gerais, Brazil

Rock crystal is the crystalline variant of quartz. Typical for all rock crystals is that they have six sides and a point. The application is known in quartz watches using the piezoelectric property of quartz. A thin plate of quartz is energized by the battery, causing it to vibrate. This vibration is so constant that it can be used as a clock.
To grind a really round ball is not easy. The starting point is a cube-like shape, of which one side is always sawn off. It comes down to faceting the piece until you have a ball.


Rounded stones with cut window
"Magic Pebbles"

These stones are tumbled but not polished. Then a piece was sawn off and the surface was polished so that it became possible to look into the stone.
Rock crystal is the crystalline variant of quartz. Typical for all rock crystals is that they have six sides and a point. The application is known in quartz watches using the piezoelectric property of quartz. A thin plate of quartz is energized by the battery, causing it to vibrate. This vibration is so constant that it can be used as a clock.


Rough geodes broken with rubber band
Geode (hollow space) in two parts with a beautiful sparkling crystal of rhinestone inside.
Location: Morocco

Rock crystal is the crystalline variant of quartz. Typical for all rock crystals is that they have six sides and a point. The application is known in quartz watches using the piezoelectric property of quartz. A thin plate of quartz is energized by the battery, causing it to vibrate. This vibration is so constant that it can be used as a clock.